公开(公告)号：US10119820B2

公开(公告)日：2018-11-06

申请号：US14618773

申请日：2015-02-10

Applicant: David M. Rozelle ,  Youngmin Albert Choi ,  James M. Pavell

Inventor： David M. Rozelle ,  Youngmin Albert Choi ,  James M. Pavell

IPC: G01C25/00 ,  G01C19/5691

Abstract: A gyroscope sensor is provided that comprises a resonator including a stem extending along an axis and a shell extending from the stem. The shell includes a hemispherical portion extending from the stem and a cylindrical portion extending from the hemispherical portion. The cylindrical portion includes an outer surface and an inner surface and terminates at an axial end surface that is perpendicular to the outer surface and the inner surface. The resonator further comprises an inner cylindrical substrate that extends along an axis and includes a set of inner electrodes arranged annularly about the axis, and a passage that extends along the axis through a central region of the inner cylindrical substrate. The stem extends through the passage to position the inner cylindrical substrate within the inner surface of the cylindrical portion of the resonator forming gaps between the set of inner electrodes and the inner surface.

公开(公告)号：US20180231383A1

公开(公告)日：2018-08-16

申请号：US15296774

申请日：2016-10-18

Applicant: ALEXANDER TRUSOV ,  DAVID M. ROZELLE ,  DAVID D. LYNCH

Inventor： ALEXANDER TRUSOV ,  DAVID M. ROZELLE ,  DAVID D. LYNCH

IPC: G01C19/5691

Abstract: One example includes a hemispherical resonator gyroscope (HRG). The HRG includes a sensing system comprising a plurality of electrodes arranged in a symmetrical annular arrangement about a sensitive axis and configured to electrostatically force a resonator into a substantially periodic motion based on a plurality of forcer signals applied to the plurality of electrodes. The plurality of electrodes are configured to provide an indication of rotation about a sensitive axis of the HRG. The HRG also includes a controller configured to generate the plurality of forcer signals in a phase-disparate manner to provide the substantially periodic motion in a vibration pattern such that a ratio of the plurality of electrodes and the vibration pattern is a non-integer number, and to measure the rotation about the sensitive axis of the HRG in response to the plurality of forcer signals.

公开(公告)号：US09702697B2

公开(公告)日：2017-07-11

申请号：US14618726

申请日：2015-02-10

Applicant: Robert E. Stewart ,  David M. Rozelle ,  Charles A. Lee

Inventor： Robert E. Stewart ,  David M. Rozelle ,  Charles A. Lee

IPC: G01C19/56 ,  G01C19/5677 ,  G01C25/00 ,  G01C19/5684 ,  G01C19/5691 ,  G01C19/5776

CPC classification number: G01C19/5677 ,  G01C19/5684 ,  G01C19/5691 ,  G01C19/5776 ,  G01C25/00

Abstract: One embodiment of the invention includes a CVG system. A plurality of electrodes electrostatically force a resonator into a periodic motion based on a drive axis forcer signal applied to a first set of the plurality of electrodes and a sense axis force-rebalance signal applied to a second set of the plurality of electrodes, and provides a sense axis pickoff signal and a drive axis pickoff signal. A gyroscope controller generates the drive axis forcer signal based on the drive axis pickoff signal and calculates an angular rate of rotation about an input axis based on the sense axis force-rebalance signal. The gyroscope controller modulates a predetermined disturbance signal component onto the sense axis force-rebalance signal and to control a modulation phase of the sense axis force-rebalance signal based on detection of the predetermined disturbance signal component in the sense axis force-rebalance signal to substantially mitigate bias and scale-factor error.

公开(公告)号：US20090095078A1

公开(公告)日：2009-04-16

申请号：US11973755

申请日：2007-10-10

Applicant: David M. Rozelle

Inventor： David M. Rozelle

IPC: G01P15/13 ,  G01P9/04

CPC classification number: G01C19/5691

Abstract: A closed loop scale factor estimator of an apparatus in one example is configured to compare a measured flex angle of a hemispherical resonator gyroscope (HRG) with a demodulation angle signal to estimate a force-to-rebalance (FTR) scale factor for the HRG, wherein the demodulation angle signal corresponds to an integral of a non-uniform rate signal applied to the HRG.

Abstract translation: 一个示例中的装置的闭环比例因子估计器被配置为将半球谐振器陀螺仪（HRG）的测量的弯曲角度与解调角度信号进行比较，以估计HRG的力对再平衡（FTR）比例因子， 其中解调角信号对应于施加到HRG的不均匀速率信号的积分。

公开(公告)号：US06330105B1

公开(公告)日：2001-12-11

申请号：US09087350

申请日：1998-05-29

Applicant: David M. Rozelle ,  Ronald J. Michal ,  Leo K. Lam ,  John F. Cappi

Inventor： David M. Rozelle ,  Ronald J. Michal ,  Leo K. Lam ,  John F. Cappi

IPC: G02F101

CPC classification number: H01S3/06795 ,  G01C19/721

Abstract: A pump light source provides pump light to an optical fiber arranged to guide the pump light to a first optical isolation device. Light output by the first optical isolation device is input to a wavelength division multiplexer. A gain fiber is connected to the wavelength division multiplexer and arranged to be optically pumped by the pump light such that the gain fiber emits broadband light that propagates to the wavelength division multiplexer. An output optical fiber is connected to the wavelength division multiplexer and arranged to guide a portion of the broadband light emitted by the gain fiber to a second optical isolation device for input to a fiber optic rotation sensor.

Abstract translation: 泵浦光源向布置成将泵浦光引导到第一光隔离装置的光纤提供泵浦光。 由第一光隔离装置输出的光输入到波分复用器。 增益光纤连接到波分多路复用器，并被布置为被泵浦光光泵浦，使得增益光纤发射传播到波分复用器的宽带光。 输出光纤连接到波分多路复用器，并且布置成将由增益光纤发射的宽带光的一部分引导到第二光隔离装置以输入到光纤旋转传感器。

公开(公告)号：US20180031373A1

公开(公告)日：2018-02-01

申请号：US15717544

申请日：2017-09-27

Applicant: ALEXANDER TRUSOV ,  DAVID M. ROZELLE

Inventor： ALEXANDER TRUSOV ,  DAVID M. ROZELLE

IPC: G01C19/5726 ,  G01C19/5755 ,  G01C19/574 ,  G01C25/00

CPC classification number: G01C19/5726 ,  G01C19/574 ,  G01C19/5755 ,  G01C25/00 ,  G01C25/005

Abstract: One embodiment of the invention includes a vibrating-mass gyroscope system. The system includes a sensor system comprising a vibrating-mass and a plurality of electrodes coupled to the vibrating-mass that are configured to facilitate in-plane motion of the vibrating-mass. The system also includes a gyroscope controller configured to generate a drive signal that is provided to a first set of the plurality of electrodes to provide an in-plane periodic oscillatory motion of the vibrating-mass along a drive axis, to generate a force-rebalance signal that is provided to a second set of the plurality of electrodes to calculate a rotation of the vibrating-mass gyroscope system about an input axis, and to generate a quadrature signal that is provided to a third set of the plurality of electrodes to substantially mitigate quadrature effects associated with the vibrating-mass.

公开(公告)号：US07912664B2

公开(公告)日：2011-03-22

申请号：US12283364

申请日：2008-09-11

Applicant: David M. Rozelle

Inventor： David M. Rozelle

IPC: G01C19/00

CPC classification number: G01C19/5691 ,  G01C21/16 ,  G01C25/005

Abstract: A self-calibrating gyroscope system provides improved estimates of, and compensation or calibration for, scale factor errors and bias errors. The gyroscope system employs a plurality of gyroscope units having sense or input axes in a mutually non-parallel arrangement. A Mode Reversal technique is used to obtain an estimate of bias error for a selected gyroscope. A Random Closed-Loop Scale Factor technique is used to obtain an estimate of scale factor error for a selected gyroscope. Because the Mode Reversal technique temporarily disrupts operation of the affected gyroscope, each of the gyroscopes may be taken offline temporarily, in turn, for calibration, and thereafter returned to normal operation. Because at least one redundant gyroscope is provided, when a selected gyroscope is offline, rate information from the remaining operating gyroscopes can be used to derive a reference rate about the axis of the offline gyroscope.

Abstract translation: 自校准陀螺仪系统为比例因子误差和偏差误差提供了改进的估计和补偿或校准。 陀螺仪系统采用具有相互非平行布置的感测或输入轴的多个陀螺仪单元。 使用模式反转技术来获得所选陀螺仪的偏差误差的估计。 随机闭环比例因子技术用于获得所选陀螺仪的比例因子误差估计。 由于模式反转技术暂时中断受影响的陀螺仪的操作，所以每个陀螺仪可能被临时脱机，进而进行校准，之后恢复正常运行。 因为提供了至少一个冗余的陀螺仪，所以当选定的陀螺仪离线时，来自剩余操作陀螺仪的速率信息可用于导出关于离线陀螺仪的轴的参考速率。

公开(公告)号：US20090031832A1

公开(公告)日：2009-02-05

申请号：US11890043

申请日：2007-08-03

Applicant: Youngmin A. Choi ,  David M. Rozelle

Inventor： Youngmin A. Choi ,  David M. Rozelle

IPC: G01C19/28

CPC classification number: G01C19/5691 ,  Y10T74/1275

Abstract: The Inner-Forcer milli-Hemispherical Resonator Gyro (mHRG) is a small, low cost, high performance gyroscope. It may have an extremely simplified design, with in one embodiment of the present method and apparatus only five major parts total, with most parts filling multiple functions. The method and apparatus in one embodiment may have: a resonator; and a body operatively coupled to the resonator, the unitary body integrally having electrodes, an electrode support unit, a weld ring and a plurality of electrically conductive pins, the plurality of electrodes operatively coupled to the electrically conductive pins.

Abstract translation: 内在力半球谐振器陀螺仪（mHRG）是一种小型，低成本，高性能的陀螺仪。 它可能具有非常简化的设计，在本方法和装置的一个实施例中，总共只有五个主要部分，大多数部件填充多个功能。 一个实施例中的方法和装置可以具有：谐振器; 以及可操作地耦合到所述谐振器的主体，所述整体具有电极，电极支撑单元，焊接环和多个导电销，所述多个电极可操作地耦合到所述导电销。

公开(公告)号：US6108086A

公开(公告)日：2000-08-22

申请号：US262795

申请日：1999-03-04

Applicant: Ronald J. Michal ,  David M. Rozelle ,  John P. Rahn

Inventor： Ronald J. Michal ,  David M. Rozelle ,  John P. Rahn

IPC: G01C19/72

CPC classification number: G01C19/72

Abstract: A system and method for providing scale factor stabilization of a broadband light source used in fiber optic gyroscopes is provided. A primary bandpass filter is positioned in the propagation path of the light emitted by the broadband light source to narrow the spectral width of the optical signal transmitted to the fiber optic gyroscope, which reduces the centroid wavelength shift resulting when the broadband light source is exposed to ionizing radiation and other harsh environmental conditions. The filtered optical signal is then passed through the fiber optic gyroscope, where the filter optical signal is processed to measure the amount of rotation of the fiber optic gyroscope. The scale factor stabilization system further includes the spectral monitor array arranged to perform direct optical wavelength measurements of the filtered optical signal to determine whether a scale factor shift in the optical signal has occurred. When a scale factor shift is detected, the detected scale factor shift is used in a compensation algorithm to correct the scale factor of the optical signal. By monitoring the scale factor shift and adjusting the values measured by the fiber optic gyroscope in accordance with the detected scale factor shift, the accuracy of the fiber optic gyro can be improved to a fraction of a part-per-million.

Abstract translation: 提供了一种用于提供光纤陀螺仪中使用的宽带光源的比例因子稳定的系统和方法。 主要带通滤波器位于由宽带光源发射的光的传播路径中，以窄化传输到光纤陀螺仪的光信号的光谱宽度，这降低了当宽带光源暴露于 电离辐射等恶劣环境条件。 滤波后的光信号然后通过光纤陀螺仪，其中处理滤波器光信号以测量光纤陀螺仪的旋转量。 比例因子稳定系统还包括频谱监视器阵列，其布置成对所滤波的光信号执行直接光波长测量，以确定是否发生了光信号中的比例因子偏移。 当检测到比例因子偏移时，在补偿算法中使用检测到的比例因子偏移来校正光信号的比例因子。 通过监测比例因子偏移并根据检测到的比例因子偏移调整由光纤陀螺仪测量的值，光纤陀螺仪的精度可以提高到百万分之几。

公开(公告)号：US10584967B2

公开(公告)日：2020-03-10

申请号：US15296774

申请日：2016-10-18

Applicant: Alexander Trusov ,  David M. Rozelle ,  David D. Lynch

Inventor： Alexander Trusov ,  David M. Rozelle ,  David D. Lynch

IPC: G01C19/5691

Abstract: One example includes a hemispherical resonator gyroscope (HRG). The HRG includes a sensing system comprising a plurality of electrodes arranged in a symmetrical annular arrangement about a sensitive axis and configured to electrostatically force a resonator into a substantially periodic motion based on a plurality of forcer signals applied to the plurality of electrodes. The plurality of electrodes are configured to provide an indication of rotation about a sensitive axis of the HRG. The HRG also includes a controller configured to generate the plurality of forcer signals in a phase-disparate manner to provide the substantially periodic motion in a vibration pattern such that a ratio of the plurality of electrodes and the vibration pattern is a non-integer number, and to measure the rotation about the sensitive axis of the HRG in response to the plurality of forcer signals.